Question 102509
Solve the system by graphing.
3x + y = –1
9x + 3y = –3

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Put both equations in slope-intercept form.
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y = -3x-1
y = -3x-1
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Graph:
{{{graph(400,300,-10,10,-10,10,-3x-1)}}}
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Solution: Since the two equations are the same every point
on the line y = -3x-1 is a solution for the system.
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Cheers,
Stan H.